Service ‘Apple Mobile Device’ (Apple Mobile Device) failed to start. Verify that you have sufficient privileges to start system services.

I have the same problem after I tryed to download 11.1.4 update. When I tried to do the procedure recommended by "jacethejedi", the files he said I needed to open and copy gave me "error 404, Files not found". Any idea what I may be doing wrong that I can't download these critical files, and hopefully solve my problem???

Don't worry about trying to do this individual file method. Use this support document to remove and reinstall iTunes. Make sure you follow the instructions exactly. It should cure your problem. http://support.apple.com/kb/HT1923

I have been unable to use my iTunes for the last week since I downloaded the new update. I got a ton of error messages saying that iTunes wasn't installed properly, apple mobile device failed to start, verify that you have sufficient privileges to start system services. (Even though I am the only user on my computer and an Admin). Apple mobile device support would not start, even if I went into services and manually attempted to start it. After spending about 10 hours looking for solutions and a call to apple support I was about ready to give up.

I run my iTunes on Windows Vista and solved the problem by using a modified form of soypisto75's method.

I ran into problems when apple mobile device support was still somehow hiding on my computer even though I uninstalled all components of iTunes and Apple software in Add/delete Programs.

If you go into services and find apple mobile device support and click on properties, it will show a pathway to where it is storing the files.

You should check in C:/ Program files, Common Files, Apple

This is where I found the last bit of the apple files that were interrupting the download. After uninstalling all Apple programs, look in Common files and DELETE THE APPLE FOLDER.

Try downloading iTunes again and then Run as Administrator. Before you click "finish" to end the install, plug in your iPhone to make sure the driver software installs.

I couldn't believe that it actually worked and I'm thankful for how helpful everyone has been on here. I hope this helps!

Excellent instructions! Easy to follow & worked! Thx

Thank you soypisto75! The instructions originally did not help me - I had to use system restore to a point before my itunes update, then follow the apple forum instructions provided by ChrisJ4203 to uninstall/reinstall, but otherwise your advice was right on. I plugged both of my iphones (5S and 4S) in before clicking finish (separately from each other). I am SO glad I did not have to bother with the registry!

Thankyou!!

Thank you so much!! This actually worked!! =)

Thank you soooo much for the help! It works!

I have been cracking my head thinking why the **** can't I reinstall my Itunes.

Will get my friends to come here for the solution.

This is just awesome!

Do you have the reg entries and support files still available for this post? Im hoping this will fix my itunes issue and currently they are not in the dropbox folder you pointed to the in tech support note. Would love to fix my system if you still have the data, thanks JacetheJedi!!!!! Matt

Does any one still have access to the files above that Jacethejedi refers too?

easy fix download itunes for older video cards type in google will fix your problem,

Ok, unfortunately this is not working for me. This particular step is where I cannot proceed:

4. go to itunes.com, download the newest version, save it to your desktop, RIGHT CLICK the icon and select RUN AS ADMINISTRATOR.

After clicking 'download' on the iTunes download page, the box that comes up only gives me the option to 'Run' or to 'Cancel', there is no option to save to my desktop. I am HORRIBLE with computers and I just need a detailed, step-by-step instruction on how to do this step #4. There is no icon available for me to click to give me any sort of 'Run As Administrator' option. And if I click 'Run' when my only options are 'Run' or 'Cancel' when I click the 'Download Now' choice on the iTunes page then it automatically downloads, I see no icon on my desktop or anything, then it ends up with the same message: "Service 'Apple Mobile Device Service' (Apple Mobile Device Service) failed to start. Verify that you have sufficient privileges to start system services."

PLEASE HELP! I've been working on this for at least 6 hours today. I can un-install everything just fine, but if I don't do this step #4 right I won't proceed. Thank you in advance for help on explaining this download, save to desktop, right click icon, run as administrator.

I have the same problem when I update iTune to 12.1 and it gives me "Apple Mobile Services Failed to start" and than later "iTunehelper was not installed error 7".

After spending an afternoon uninstalling and re-installing all Apple programs one by one as instructed, it still would not work.

Then I noticed that there are two versions of iTune available for download, one is iTune6464.exe and the other iTune64.exe, which is for OLDER video cards. The iTune6464.exe is put right in front, but the iTune64.exe is put somewhere behind the Apple Website and is hard to find. They do not indicate how "old" the video card should be to use this version. So I give a try, and it installs flawlessly in my computer (my video card is GeForce GT520). My new iPad and old iPod now work with no trouble at all.

thank you nepeaner! I tried almost everything. Finally i downloaded the older version and it works just fine!

Thanks a lot nepeaner. I tried to help a friend with that problem and had to spent 4 hours to solve that problem. Your post finally solved that problem. His system has an GTX650 Ti installed.

For German Users: You will find the Version of iTunes64 which is working correctly here --> iTunes 12.1.1 für Windows (64 Bit – für ältere Grafikkarten)

Greetings